JPS5811109Y2 - 夜間切替回路 - Google Patents

夜間切替回路

Info

Publication number
JPS5811109Y2
JPS5811109Y2 JP1981192571U JP19257181U JPS5811109Y2 JP S5811109 Y2 JPS5811109 Y2 JP S5811109Y2 JP 1981192571 U JP1981192571 U JP 1981192571U JP 19257181 U JP19257181 U JP 19257181U JP S5811109 Y2 JPS5811109 Y2 JP S5811109Y2
Authority
JP
Japan
Prior art keywords
line
relay
switching circuit
night
communication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP1981192571U
Other languages
English (en)
Japanese (ja)
Other versions
JPS57115784U (enExample
Inventor
史朗 榎並
希一 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1981192571U priority Critical patent/JPS5811109Y2/ja
Publication of JPS57115784U publication Critical patent/JPS57115784U/ja
Application granted granted Critical
Publication of JPS5811109Y2 publication Critical patent/JPS5811109Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP1981192571U 1981-12-25 1981-12-25 夜間切替回路 Expired JPS5811109Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1981192571U JPS5811109Y2 (ja) 1981-12-25 1981-12-25 夜間切替回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1981192571U JPS5811109Y2 (ja) 1981-12-25 1981-12-25 夜間切替回路

Publications (2)

Publication Number Publication Date
JPS57115784U JPS57115784U (enExample) 1982-07-17
JPS5811109Y2 true JPS5811109Y2 (ja) 1983-03-01

Family

ID=29996209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1981192571U Expired JPS5811109Y2 (ja) 1981-12-25 1981-12-25 夜間切替回路

Country Status (1)

Country Link
JP (1) JPS5811109Y2 (enExample)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5249283B2 (enExample) * 1973-03-31 1977-12-16
JPS5185306A (en) * 1975-01-23 1976-07-26 Nippon Electric Co Jidodenwakokankino shingokenshutsukairo

Also Published As

Publication number Publication date
JPS57115784U (enExample) 1982-07-17

Similar Documents

Publication Publication Date Title
JPS59501811A (ja) 電話回線用インタ−フェイス
JPS5811109Y2 (ja) 夜間切替回路
US4310723A (en) Party line apparatus
JPS6251018B2 (enExample)
JPS58501610A (ja) 通信ラインのための検出回路
US3553373A (en) Manual rerouter system for telephone subscriber station with combined conference call feature
JPH0642702B2 (ja) 網制御装置
JP2840116B2 (ja) ダイヤルイン着呼受信装置
JPS5834841Y2 (ja) オフフツク検出装置
JPS6010896A (ja) 局線回路
JP2731247B2 (ja) 網制御装置
JP2731248B2 (ja) 網制御装置
JPS5855702Y2 (ja) 発呼検出装置
JPH0345599B2 (enExample)
JPS646618Y2 (enExample)
JPH0413880Y2 (enExample)
JPH04313942A (ja) ノーリンギング通信用網制御装置
JPS62241493A (ja) ル−プ検出回路
JPS6228913B2 (enExample)
JPS58215849A (ja) ル−プ状態検出回路
JPS59229960A (ja) 着信転送方式
JPH02124673A (ja) 自動通報装置
JPH0544239B2 (enExample)
JPH0227862A (ja) 網制御回路
JPH0722297B2 (ja) 局線終端回路